Re: [cobalt-users] 99.9% up time

[Colin Smith <colin@xxxxxxxxxxxxxxxxxxxx>]

On Mon, 3 Apr 2000, New Wave Industries, Inc. wrote:

> I want to garanty a 99.9% up time to my customers.
> I have an idea on how to do it but I need some advise..
> I was thinking about imaging the rack once a day on another backup rack
> If anyone has done this before or has been doing it please let me know....
> Any information on garanting a 99.9% up time would be very apprechiatted.

99.9% is 9 hours per year, that's easy. All you need for that is a good
UPS and a guaranteed network link. The box will do 99.9% all on it's own.
It's worth mirroring it's internal disks though just to be sure.

99.99% and above you'll need a cluster of some sort. Join the Linux HA
mailing list. There are some software tools which'll mirror writes to
backup servers as they happen. They are on the linux HA web site.

Note: 70% of down time is due to *administrator error*. High availability
is more to do with good procedures than technological tricks.

> 
> Thanks,
> 
> Steve
> 
> 

-- 
|Colin Smith:  Colin.Smith@xxxxxxxxxxxxxxxxxxxx  |   Windows 2000    |
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